2768-02-7

Basic information

• Product Name: Vinyltrimethoxysilane
• Synonyms: (TRIMETHOXYSILYL)ETHYLENE;TRIMETHOXYVINYLSILANE;VTMO;VINYLTRIMETHOXYSILANE;ETHENYLTRIMETHOXYSILAN;DOW CORNING(R) PRODUCT Q9-6300;(trimethoxysilyl)ethene;a171
• CAS NO: 2768-02-7
• Molecular Formula: C₅H₁₂O₃Si
• Molecular Weight: 148.23
• EINECS: 220-449-8
• Product Categories: Silicone series;Functional Materials;Si (Classes of Silicon Compounds);Silane Coupling Agents;Si-O Compounds;Trialkoxysilanes;Vinyl Silanes (Silane Coupling Agents);Vinylsilanes, Allylsilanes;Adhesion Promoters;Coupling Agents;Surface Modifiers;silane
• Mol File: 2768-02-7.mol
• Article Data: 16

Chemical Properties

• Melting Point: 123°C
• Boiling Point: 123 °C(lit.)
• Flash Point: 73 °F
• Appearance: Colorless transparent liquid
• Density: 0.971 g/mL at 25 °C(lit.)
• Vapor Pressure: 16.4mmHg at 25°C
• Refractive Index: n20/D 1.392(lit.)
• Storage Temp.: 2-8°C
• Explosive Limit: 1.1%(V)
• Water Solubility: slightly soluble
• Sensitive: Moisture Sensitive
• BRN: 1099136
• CAS DataBase Reference: Vinyltrimethoxysilane(CAS DataBase Reference)
• NIST Chemistry Reference: Vinyltrimethoxysilane(2768-02-7)
• EPA Substance Registry System: Vinyltrimethoxysilane(2768-02-7)

Safety Data

• Hazard Codes: Xi
• Statements: 10-36/37/38-20
• Safety Statements: 26-36/37/39-37/39-16
• RIDADR: UN 1993 3/PG 2
• WGK Germany: 1
• RTECS: VV6770000
• F: 10-21
• TSCA: Yes
• HazardClass: 3
• PackingGroup: III
• Hazardous Substances Data: 2768-02-7(Hazardous Substances Data)

Usage

Uses

Used in Coating Industries:
Vinyltrimethoxysilane is used as a surface modifier for materials such as TiO2, talc, kaolin, magnesium oxide nanoparticles, ammonium phosphate, and PEDOT. It provides superhydrophobicity by capping the material and creating a water-resistant protective layer, making it suitable for major coating industries.
Used in Polymer Preparation:
VTMS is used as a co-monomer in the preparation of different polymers, such as polyethylene or acrylics. These polymers exhibit improved adhesion to inorganic surfaces and can be crosslinked with moisture, enhancing their performance in various applications.
Used in Moisture-Curing Polymers:
Vinyltrimethoxysilane is used in the preparation of moisture-curing polymers, like polyethylene. Silane crosslinked polyethylene is widely utilized as cable isolation and sheathing, particularly in low voltage applications, as well as for hot water/sanitary pipes and underfloor heating systems.
Used as an Adhesion Promoter:
VTMS serves as an efficient adhesion promoter for various mineral-filled polymers, enhancing their mechanical and electrical properties, especially after exposure to moisture.
Used in Filler Compatibility:
Vinyltrimethoxysilane improves the compatibility of fillers with polymers, leading to better dispersibility, reduced melt viscosity, and easier processing of filled plastics.
Used in Surface Pre-Treatment:
VTMS is used for pre-treating glass, metals, or ceramic surfaces to improve the adhesion of coatings on these surfaces and enhance their corrosion resistance.
Used as a Moisture Scavenger:
Vinyltrimethoxysilane acts as a moisture scavenger, reacting rapidly with water. This property is widely utilized in the formulation of sealants.

Flammability and Explosibility

Flammable

InChI:InChI=1/C5H12O3Si/c1-5-9(6-2,7-3)8-4/h5H,1H2,2-4H3

Upstream product

• 67-56-1 methanol 
• 75-94-5 trichlorovinylsilane 
• 2487-90-3 trimethoxysilane 
• 74-86-2 acetylene 
• 1634-04-4 tert-butyl methyl ether 

Downstream Products

• 2097-18-9 1-vinylsilatrane 
• 681-84-5 tetramethylorthosilicate 
• 16720-19-7 2-trimethoxysilyl-1-ethyl thioacetate 
• 18293-85-1 1,3-divinyl-1,1,3,3-tetramethoxydisiloxane 
• 111079-92-6 phenyl 2-(trimethoxysilyl)ethyl selenide 
• 622-97-9 1-ethenyl-4-methylbenzene 
• 613-33-2 (4,4'-dimethyl-1,1'-biphenyl) 
• 18406-41-2 1,2-bis(trimethoxysilyl)-ethane 
• 26972-40-7 1-vinylbenzimidazole 
• 70531-02-1 trans-1-phenyl-2-(trimethoxysilyl)ethene 
• 1620-61-7 2-hydroxy-2-phenyl-3-butenoic acid methyl ester 
• 58824-54-7 p-chlorophenylvinylcarbinol 
• 4393-06-0 1-Phenyl-2-propen-1-ol 
• 104713-12-4 (R)-1-phenylprop-2-en-1-ol 

Related news

Creation of coating surfaces possessing superhydrophobic and superoleophobic characteristics with fluoroalkyl end-capped vinyltrimethoxysilane (cas 2768-02-7) oligomeric nanocomposites having biphenylene segments07/18/2019

Fluoroalkyl end-capped vinyltrimethoxysilane oligomeric nanocomposites having biphenylene units [RF-(VM-SiO2)n-RF/Ar-SiO2] were prepared by the sol–gel reaction of the corresponding oligomer [RF-(VM)n-RF] with 4,4′-bis(triethoxysilyl)-1,1′-biphenyl [Ar-Si(OEt)3] under alkaline conditions. RF-...detailed

Evaluation of the influence of experimental parameters in the formation of a vinyltrimethoxysilane (cas 2768-02-7) film on 1010 carbon steel through electrochemical impedance spectroscopy and contact angle techniques07/17/2019

The influence of experimental parameters on the formation of vinyltrimethoxysilane (VTMOS) film to protect 1010 carbon steel against corrosion by electrochemical impedance spectroscopy (EIS) and contact angle measurements was evaluated. Specimens were developed from three 23 factorial designs an...detailed

Modification of silicalite-1 by vinyltrimethoxysilane (cas 2768-02-7) (VTMS) and preparation of silicalite-1 filled polydimethylsiloxane (PDMS) hybrid pervaporation membranes07/16/2019

In preparation of inorganic particles filled polymer membranes, coupling agents can help to improve the compatibility between inorganic filler and polymer matrix. In this paper, surface modification of silicalite-1 was performed by a coupling agent, vinyltrimethoxysilane (VTMS), and hybrid perva...detailed

Selective modification of kaolinite with vinyltrimethoxysilane (cas 2768-02-7) for stabilization of Pickering emulsions07/11/2019

Amphiphilically modified kaolinite was produced by the modification of the octahedral surface of kaolinite with vinyltrimethoxysilane for use in the stabilization of Pickering emulsions. The covalent grafting of the hydrolysate of vinyltrimethoxysilane on the kaolinite octahedral surface resulte...detailed

Relevant articles and documents

Anti-Markovnikov addition of 2-mercaptobenzoxazole and 2-mercaptobenzothiazole to trimethoxy(vinyl)silane under solvent- and catalyst-free conditions

The addition of 2-mercaptobenzoxazole or 2-mercaptobenzothiazole to trimethoxy(vinyl)silane was studied. The thiol-ene reaction leads to previously unknown carbofunctional (trimethoxysilyl)ethyl derivatives of 2-mercaptobenzazoles C6H4N(Y)CS(CH2)2Si(OMe)3 (Y = O, S) with anti-Markovnikov orientation. The proposed mechanism is confirmed by EPR spectroscopy and quantum chemical calculations.

New vinyl alkoxy silane preparation process

The present invention discloses a new vinyl alkoxy silane preparation process, which is characterized in that hydrogen chloride produced during a preparation process is adopted as a reactant to synthesize an initial raw material trichlorosilane, the hydrogen chloride is recycled, and the byproduct bis(trialkoxy)silyl ethane is adopted as a reaction solvent during a hydrogen silicon addition process, such that the byproduct emission is reduced, the new impurity introduction is avoided, and the product purity is improved. According to the present invention, the new process has characteristics of stable production, simple preparation process, and mild reaction conditions, and the yield of the product vinyl alkoxy silane is high, and the product purity is more than 99%.

COSMETIC TREATMENT METHOD COMPRISING THE APPLICATION OF A COATING BASED ON AN AEROGEL COMPOSITION OF LOW BULK DENSITY

The present invention relates to a cosmetic treatment method comprising the formation of a coating on keratin fibres characterized in that it comprises: 1) the preparation of an aerogel precursor composition comprising:—at least one organic solvent chosen from acetone, C1-C4 alcohols, C1-C6 alkanes, C1-C4 ethers, which may or may not be perfluorinated, and mixtures thereof and at least one precursor compound that contains:—at least one atom chosen from silicon, titanium, aluminium and zirconium,—at least one hydroxyl or alkoxy function directly attached to the atom chosen from silicon, titanium, aluminium and zirconium by an oxygen atom, and,—optionally an organic group directly attached to the atom chosen from silicon, titanium, aluminium and zirconium by a carbon atom, 2) the removal of the solvent or solvents resulting in the formation of an aerogel composition having a bulk density less than or equal to 0.35 g/cm3, 3) the application to the keratin fibres of the aerogel composition resulting from step 2) or of the aerogel precursor composition resulting from step 1). Advantageously, the molar ratio between the precursor compounds and the solvent is at most 1/20.

Synthesis of a multifunctional alkoxysiloxane oligomer

An alkoxysiloxane oligomer (1, SiMe[OSi(CHCH2)(OMe)2][OSi(CH2)3Cl(OMe)2]2), containing vinyl and chloropropyl groups, was synthesized as a precursor for sol-gel synthesis. Di-tert-butoxymethylhydroxysilane (t-BuO)2MeSiOH was reacted with (MeO)2(CH2CH)SiCl to form (t-BuO)2MeSiOSi(CHCH2)(OMe)2 which was further alkoxysilylated with Cl(CH2)3SiCl(OMe)2 to form 1. The 1H, 13C, 29Si NMR and HR-MS data confirmed the formation of 1, indicating the successful synthesis of an alkoxysiloxane oligomer possessing different kinds of functional groups by a chemoselective route. Hydrolysis of 1 under acidic conditions was completed in a few hours. The solution state 29Si NMR spectra of samples hydrolyzed and condensed at various reaction times show no signals due to species generated by the cleavage of the siloxane bonds in 1, indicating the validity of the synthesized substance as a precursor for the formation of hybrids with homogeneously distributed functional groups. Intramolecular condensation of 1 to form cyclic trisiloxane units proceeds more preferentially than intermolecular condensation.

METHOD OF PRODUCING A HYDROLYZABLE SILICON-CONTAINING COMPOUND

The present invention provides a safe, inexpensive, and high yield means of producing a hydrolyzable silicon-containing compound, e.g., an organooxysilane and the like. A compound (A) represented by the general formula R1-O-R2 wherein R1 represents a C4-30, substituted or unsubstituted, tertiary alkyl group or aralkyl group and R2 represents a C1-30, substituted or unsubstituted, monovalent hydrocarbyl group or acyl group, is reacted in the presence of a Lewis acid catalyst with a halosilane (B) represented by the general formula R3mSiX4-m wherein R3 represents the hydrogen atom or a C1-30 substituted or unsubstituted monovalent hydrocarbyl group, X is independently bromine or chlorine, and m represents an integer from 0 to 3.

Practical conversion of chlorosilanes into alkoxysilanes without generating HCl

Alcohol-free: A versatile, efficient, and practical synthesis of alkoxysilanes without generation of HCl involves the reaction of chlorosilanes with unsymmetrical ethers in the presence of a Lewis acid (see scheme). The reaction proceeds through selective cleavage of C-O bonds and is superior to conventional processes. Industrially feasible reagents are used and only one by-product results. Copyright

Hydrosilylation process for gaseous unsaturated hydrocarbons

Organosilicon compounds are prepared by the addition reaction of a gaseous unsaturated hydrocarbon with a silane or siloxane containing at least one silicon-bonded hydrogen atom in the presence of a hydrosilylation catalyst in a liquid reaction medium. In this process the unsaturated hydrocarbon and optionally the silane or siloxane is dispersed into the liquid reaction medium by a jet eductor (also known as a venturi pump) device and the resultant gas-in-liquid dispersion is introduced into a bubble reactor.

COMPOSITION FOR RESIST UNDERLAYER FILM AND PROCESS FOR PRODUCING SAME

A composition for a resist underlayer film is provided. The composition has excellent storage stability and can form a resist underlayer film which has excellent adhesion to a resist film, can improve reproducibility of a resist pattern and is resistant to an alkaline liquid used in development and to oxygen asking during the removal of a resist. The composition comprises a hydrolyzate and/or a condensate of a silane compound of the following formula (A), [in-line-formulae]R1bR2cSi (OR3)4-a??(A)[/in-line-formulae] wherein R1 is a monovalent organic group having at least one unsaturated bond, R2 individually represents a hydrogen atom, a halogen atom or a monovalent organic group, R3 individually represents a monovalent organic group, R1 is a group other than OR3, a is an integer of 1 to 3, b is an integer of 1 to 3, and c is an integer of 0 to 2, provided that a=b+c.

Reaction of organylalkoxysilanes with ethanolamine and disproportionation of transetherification products

Transetherification of organylalkoxysilanes with monoethanolamine was carried out. Disproportionation in mixtures containing organylalkoxysilanes with an amino group in the substituent was studied by means of NMR spectroscopy. It was shown that the disproportionation rate decreases with increase size of substituents on the silicon atom. The equilibrium composition of disproportionation products corresponds to the normal statistical distribution, except for mixtures containing tris(1-methylpropylideneaminooxy)(vinyl)-silane.

METHOD FOR PREPARATION OF ALKOXYSILANES HAVING REDUCED HALIDE CONTENT

Disclosed is a method for lowering the residual halide content in alkoxysilanes. The method comprises contacting the alkoxysilane having residual halide content with activated carbon followed by separation of the alkoxysilane. The resultant materials are useful as intermediates for the preparation of other chemical compounds and for use in electronics applications.